Find the value of $225 - [ 42 -$ {$25 -(18 - \overline{18+13})$}].
Answer & explanation
Correct answer: option 2
$225 - [ 42 -$ {$25 -(18 - \overline{18+13})$}].
= 225 – [42 – {25 – (18 – 31)}]
= 225 – [42 – {25 – (-13)}]
= 225 – [42 – {25 + 13}]
= 225 – [42 – (38)]
= 225 – 4 = 221